Locate Expander(s) away from heat sources, such as engine exhaust manifolds turbochargers. Allow 4 feet
(1,2m) of clearance, or more, between the Expander(s) and such heat sources.
Do not mount close to gas engine ignition systems, alternators, or electric motors. Allow 4 feet (1,2m) of
clearance between the Expander and alternators or electric motors.
A threaded hole is provided for connection to the vessel’s bonding system.
MMC-343: 4 Station Expander Power
The Station Expander requires:
• A battery source of 12 or 24 volts DC
• A 10 ampere circuit breaker with manual reset
• Automatic Power Selector (refer to S-214 Automatic Power Selector Model: 13505)
The power source should be the same as the processors power source which can be either 12 or 24 volts
DC. It is important to keep the length of power cable short to reduce voltage drop.
It is recommended by ZF Marine Propulsion Systems Miramar that an Automatic Power Selector (APS) and
a second power source be used. Refer to S-214 Automatic Power Selector Model: 13505
and Section 7.2
Power Cable.
MMC-343: 5 Harnesses
Below is a general list of Wire Harnesses available to Station Expander. A complete harness list and part
numbers are located in section MMC-343: 13 Parts List.
Stations 2-4 connectors on the Station Expander are sealed with plugs at the factory. Every connector
should either have inserted a Wire Harness or plug. Do not leave a connector empty
.
• (2) Power Wire Harness (Station Expander to Power connections)
• (4) Control Head Wire Harness (Station Expander to Control Head)
• (5) Serial Communication Wire Harness (Processor to Station Expander to 2nd (etc.) Processor)
CAUTION: Electro-magnetic fields can influence the Station Expander’s electronic circuits.
NOTE: The Processor and the Station Expander may use the same Automatic Power Selector, but the Station
Expander MUST have a separate circuit breaker.
CAUTION: It is important that the wire size from the battery to the circuit breaker panel is large enough to keep
voltage drop due to current flow, to less than 3% of 7 amps. The DC return to the battery must be large
enough to supply all current requirements with a voltage drop of less than 3%. Refer to ABYC E-9.
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